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154=7(-2x+2)
We move all terms to the left:
154-(7(-2x+2))=0
We calculate terms in parentheses: -(7(-2x+2)), so:We get rid of parentheses
7(-2x+2)
We multiply parentheses
-14x+14
Back to the equation:
-(-14x+14)
14x-14+154=0
We add all the numbers together, and all the variables
14x+140=0
We move all terms containing x to the left, all other terms to the right
14x=-140
x=-140/14
x=-10
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